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An open capillary tube is lowered in ves...

An open capillary tube is lowered in vessel with mercury. The difference between the levels of the mecury in the vessel and in the capillary tube `/_\h=4.6 mm`. What is the radius of curvature of the mercury meniscus in the capillary tube? Surface tension of mercury is `0.46N//m`, density of mercury is `13.6gm//"cc"`.

A

`(1)/(340)m`

B

`(1)/(680)m`

C

`(1)/(1020)m`

D

Information insufficient

Text Solution

Verified by Experts

The correct Answer is:
B
`triangleh=(2Scostheta)/(rrhog)=(2S)/(Rrhog)implies(2S)/(trianglehrhog)`
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Knowledge Check

  • The meniscus of mercury in the capillary tube is

    A
    Convex
    B
    Concave
    C
    Plane
    D
    Uncertain

  • The factor responsible for lower mercury level in a capillary tube is

    A
    high density
    B
    surface tension
    C
    liquid state
    D
    viscosity resistance

  • If water rises in a capillary tube upto 3 cm . What is the diameter of capillary tube (Surface tension of water = 7.2 xx 10^(-2) N//m )

    A
    `9.6 xx 10^(-4)m`
    B
    `9.6 xx 10^(-3)m`
    C
    `9.6 xx 10^(-2)m`
    D
    `9.6 xx 10^(-1)m`

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